Strange results in deletion of lines

[Jim Ault]

>
> On May 11, 2010, at 3:27 PM, Douglas wrote:

> Hang on, you just happened to throw in that you ALSO want to do  
> processing with the lines that you just asked to be deleted!
> It seems silly to go through the deletion when you are going to have  
> to go through the whole search over again.
>
> Surely it would have been better to sort the data into separate  
> variables or even arrays rather than deleting in the first place?
> This would keep the data separate for secondary processing and if  
> referenced in array could also hold references to the original  
> placing in the source file/variable if required.
>
>
> On 11/05/2010 04:51, David C. wrote:
>> Then I get to build a second version that keeps the deleted "F" items
>> in place while removing everything else.


I would use the filter command for speed and programming clarity.

get tMyData
filter IT with "F*"
-- now IT contains all lines starting with "F"
filter tMyData without "F*"
-- now tMyData contains all other lines

repeat for each line L in IT
      process L
      put L & CR after tOutputFLines
end repeat

The reason I would be careful of using arrays is that duplicate lines  
would be lost since the keys would be identical.



Jim Ault
Las Vegas